CORRECT. 34a – Use a semicolon (no hyphen in semicolon) between closely related independent clauses not joined by a coordinating conjunction. Also have option to place commas after both Yesterday and today (see slide 13).
Ambiguous. 36a – To denote plural possessive, add an apostrophe. Period. In the plural sense, all of the uniforms of all of the cheerleaders were stolen. But—One might also argue that there is but one cheerleader who had all of her uniforms stolen, in which case the sentence is punctuated correctly.
CORRECT. 39d – Though it can get pretty crowded in there. But use ellipses only when ellipsing material from the middle of a quote—not at the beginning or the end. And a space before and after every dot.